728
FZUS51 KBOX 291104
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT WED APR 29 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-300000-
704 AM EDT WED APR 29 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES WELL SOUTHEAST OF 40N/70W WILL CONTINUE TO DRIFT
EVEN FURTHER SOUTHEAST TONIGHT. OTHERWISE...HIGH PRES WILL REMAIN IN
CONTROL OF OUR WATERS INTO EARLY WED. LOW PRES THEN APPROACHES FROM
THE WEST LATER WED AND INTENSIFIES OFF THE COAST THU EVENTUALLY
LIFTING INTO MAINE FRI. THIS LOW WILL CONTINUE TO LIFT NORTHWEST
INTO QUEBEC BY SAT.
ANZ250-300000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TODAY
NE WINDS 5 TO 10 KT. SEAS 5 TO 8 FT. WAVE DETAIL: E 8 FT
AT 10 SECONDS AND NW 1 FOOT AT 2 SECONDS. PATCHY FOG. A SLIGHT
CHANCE OF SHOWERS THIS MORNING, THEN A CHANCE OF SHOWERS THIS
AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS THIS
AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND NW 1 FOOT AT 2 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 NM OR LESS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: E
7 FT AT 10 SECONDS AND S 1 FOOT AT 3 SECONDS. PATCHY FOG.
SHOWERS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE
AFTERNOON.
THU NIGHT
W WINDS 5 TO 10 KT, INCREASING TO AROUND 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND W 2 FT AT 3 SECONDS. PATCHY FOG IN THE
EVENING. SHOWERS LIKELY IN THE EVENING WITH VSBY 1 TO 3 NM.
FRI
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT
4 SECONDS.
FRI NIGHT
W WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-300000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND N 2 FT AT 3 SECONDS. PATCHY FOG. A SLIGHT
CHANCE OF SHOWERS THIS AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS THIS AFTERNOON.
TONIGHT
E WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND NE 2 FT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND S 1 FOOT AT 3 SECONDS. PATCHY FOG. SHOWERS.
VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W
2 FT AT 5 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN
THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND W 2 FT AT
3 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 3 SECONDS AND E 3 FT AT 9 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-300000-
CAPE COD BAY-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT
AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS. PATCHY FOG. A SLIGHT
CHANCE OF SHOWERS THIS MORNING, THEN A CHANCE OF SHOWERS THIS
AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS THIS
AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 11 SECONDS AND N 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS.
THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 7 SECONDS AND SE 1 FOOT AT 2 SECONDS. PATCHY FOG. SHOWERS.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
THU NIGHT
W WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
2 FT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS. PATCHY FOG IN THE
EVENING. SHOWERS LIKELY IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND SE 2 FT AT
5 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
WAVE DETAIL: S 2 FT AT 5 SECONDS AND W 1 FOOT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-300000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TODAY
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E
8 FT AT 11 SECONDS AND N 5 FT AT 5 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E
7 FT AT 10 SECONDS AND E 3 FT AT 5 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS. VSBY 1 NM OR LESS.
THU
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 3 FT AT
5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND E
3 FT AT 5 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN
THE EVENING WITH VSBY 1 TO 3 NM.
FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND SW 2 FT AT 5 SECONDS.
FRI NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SW
2 FT AT 4 SECONDS.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT AND SUN
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-300000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TODAY
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 11 SECONDS AND N 4 FT AT
5 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS THIS AFTERNOON.
TONIGHT
E WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND E 5 FT AT
6 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: SE 6 FT AT 11 SECONDS AND SE 5 FT AT
6 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND
W 4 FT AT 5 SECONDS. PATCHY FOG IN THE EVENING. A CHANCE OF
SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE
DETAIL: SW 6 FT AT 6 SECONDS AND SE 4 FT AT 10 SECONDS.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND E 3 FT AT 10 SECONDS.
SAT NIGHT AND SUN
W WINDS 5 TO 10 KT, INCREASING TO 15 TO
20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-300000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT THIS AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT
10 SECONDS AND N 3 FT AT 4 SECONDS. PATCHY FOG.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS AND E 5 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
THU
SE WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 5 SECONDS AND SE 5 FT AT
10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND
W 4 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SW 4 FT
AT 5 SECONDS AND SE 4 FT AT 10 SECONDS.
FRI NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E
3 FT AT 9 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-300000-
NANTUCKET SOUND-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND E 3 FT AT 11 SECONDS. PATCHY FOG. A SLIGHT
CHANCE OF SHOWERS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
THIS AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND E 2 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
THU
SE WINDS AROUND 10 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 2 FT AT
11 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND E
2 FT AT 5 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN
THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 2 FT AT
5 SECONDS.
SAT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SUN AND SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-300000-
VINEYARD SOUND-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND S 1 FOOT AT 11 SECONDS. PATCHY FOG.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
11 SECONDS. PATCHY FOG. SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO
3 NM.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
SE 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND S 1 FOOT AT
10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND S 2 FT AT 9 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-300000-
BUZZARDS BAY-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY FOG THIS
MORNING.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT
11 SECONDS. PATCHY FOG. SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO
3 NM.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS AND NW 1 FOOT AT
2 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND
SE 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-300000-
RHODE ISLAND SOUND-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING E THIS AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND N 2 FT AT
3 SECONDS. PATCHY FOG THIS MORNING.
TONIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 10 SECONDS AND E 2 FT AT 7 SECONDS. PATCHY FOG. SHOWERS
LIKELY AFTER MIDNIGHT. VSBY 1 TO 3 NM.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND W 2 FT AT
5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND
W 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 3 FT AT 10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: S 4 FT AT 9 SECONDS AND SW 3 FT AT 5 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-300000-
BLOCK ISLAND SOUND-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS 5 TO 10 KT, BECOMING SE THIS AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS.
TONIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 11 SECONDS AND NE 2 FT AT 7 SECONDS. PATCHY FOG. SHOWERS
LIKELY AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM
AFTER MIDNIGHT.
THU
SE WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND E 3 FT AT
7 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM IN THE MORNING.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND W 2 FT AT
3 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SW 2 FT AT
4 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SW
2 FT AT 4 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-300000-
BOSTON HARBOR-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE. PATCHY FOG THIS AFTERNOON. A
SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE. PATCHY FOG. SHOWERS AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
THU
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. SHOWERS LIKELY IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-300000-
NARRAGANSETT BAY-
704 AM EDT WED APR 29 2026
TODAY
N WINDS AROUND 10 KT, BECOMING E THIS AFTERNOON. WAVES
AROUND 2 FT.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG.
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO 3 NM.
THU
SE WINDS AROUND 5 KT, BECOMING W IN THE AFTERNOON. WAVES
AROUND 2 FT. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
NW WINDS 10 TO 15 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-300000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 AM EDT WED APR 29 2026
TODAY
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 7 TO 9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND NW 1 FOOT
AT 2 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER
MIDNIGHT.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND S 1 FOOT AT 3 SECONDS. PATCHY FOG. SHOWERS.
VSBY 1 NM OR LESS.
THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 5 TO 6 FT. WAVE DETAIL: E 6 FT AT
10 SECONDS AND W 1 FOOT AT 2 SECONDS. PATCHY FOG IN THE EVENING.
SHOWERS IN THE EVENING WITH VSBY 1 TO 3 NM.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND W 3 FT AT
4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND SW
2 FT AT 5 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-300000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING E THIS AFTERNOON. SEAS
8 TO 10 FT, SUBSIDING TO 7 TO 8 FT THIS AFTERNOON. WAVE DETAIL: E
10 FT AT 10 SECONDS AND N 5 FT AT 5 SECONDS, BECOMING E 8 FT AT
10 SECONDS AND E 4 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. A SLIGHT CHANCE OF TSTMS THIS MORNING. VSBY 1 NM OR
LESS.
TONIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 7 TO
8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND E 4 FT AT 5 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 4 FT AT 5 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 6 TO 7 FT. WAVE DETAIL: E 6 FT AT
10 SECONDS AND W 3 FT AT 4 SECONDS. PATCHY FOG IN THE EVENING.
SHOWERS IN THE EVENING WITH VSBY 1 TO 3 NM.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT
5 SECONDS.
SAT
SW WINDS AROUND 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 4 FT
AT 10 SECONDS AND SW 3 FT AT 6 SECONDS.
SAT NIGHT AND SUN
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-300000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND N 5 FT AT
5 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR
LESS.
TONIGHT
E WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 5 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS.
THU
SE WINDS AROUND 10 KT, BECOMING S IN THE AFTERNOON. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 6 FT AT
6 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND W 4 FT AT
5 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN THE
EVENING WITH VSBY 1 TO 3 NM.
FRI
W WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND SW 4 FT AT 6 SECONDS.
FRI NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 6 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND E
4 FT AT 9 SECONDS.
SAT THROUGH SUN
NW WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. A CHANCE
OF SHOWERS.
SUN NIGHT
SW WINDS 15 TO 20 KT. SEAS 5 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-300000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 AM EDT WED APR 29 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT THIS AFTERNOON. SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 3 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM.
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
5 TO 6 FT. WAVE DETAIL: S 6 FT AT 6 SECONDS AND E 6 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
5 TO 6 FT. WAVE DETAIL: SE 6 FT AT 6 SECONDS AND E 6 FT AT
10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 15 TO 20 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND NW 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE
DETAIL: E 5 FT AT 10 SECONDS AND W 4 FT AT 6 SECONDS.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND E 3 FT AT 10 SECONDS.
SAT NIGHT
W WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT.
SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page